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Okay so first, to make the process more simple, I would suggest collecting all algebraic terms on the same side of the question as to get: 9x-5y=21 and 7y+6x=45 (as it already is). Next, looking at both equa...

Algebra is a part of mathematics in which letters or symbols are used to represent either a known constant or an unknown value. Algebra is often used within formulae in which we can extrapolate an answer, an...

We use factorisation of double brackets to re-express the equation in a more useful form. For this factorisation, we require two numbers that add to make 14 and also multiply to make 40. We notice that the n...

Find the lowest common denominator of either x or y. x in this example. ( 12x ) Multiply both equations such that the x's match this. ( 1) 12x + 8y = 16 & 2) 12x + 15y = 51 ) Combine these formulas by ta...

Should start completing the square by figuring out what the square will be ( (x + 2) 2 ) Figure out what should be added/taken away from the square to complete it by multiplying out ( (x + 2) 2 + 3 ) Correct...